Vacuum-producing apparatus



1,622,155 March A22, 1927. A. M KOBIOLKE, l

VACUUM PRODUGING APPARATUS Filed Nov. 14, 1922 'maa "sa sa i D# Innen/fof' A M /fob/a//fe .Paulina Mar.' z2, 1927..

UNITED lsrn'rrs PATENT OFFICE.

ADoLPII MARTIN xoBIoLxn, or GILnnuoY, vIAYAnaA .-iUNcTIoN, vIcToaIA,

AUSTRALIA. -v

VACUUM-PBODUCING APPARATUS.

Application led November 14, 1922, Serial No. 600,965, and in Australia December 5, 1921.

haust airor other gases more rapidly andA economically than vacuum pumps and like ldevices at present commonly employed for such purposes.

The salient feature embodied in this invention comprises means in the pressure fluid pipe whereby centrifugal motion is imparted tothe fluid to cause it to form a hollow whirling jet or vortex into the hollow of which the -alr is drawn from the chamber being exhausted.

But inorder that this invention may be f better understood reference will now be made to the accompanying sheet of drawings which are to be taken. as part of this specification andrea'd herewith f The drawing illustrates `a part'sectional view of the improved apparatus' which is shown applied tm vacuum chamber from 'which' it is desired [to exhaust air.r The dotted arrows indicate the course of the exhausted air 'whilstthe unbroken arrows de note the course taken by the. pressure huid 4which creates the vacuumq 4The invention includes a pressure 'Huid pipe or cylinder 2 which may be anged atA one end as at -3 this flange being bolted to a similar flange 4. on an extensionor 'ca of the pipe or cylinder 2. A jointng ring is .inserted in. grooves in the opposite end faces of the elements 2 and 6 as shown. Said cap and jointing means may however be dis pensed with in some cases.- A pressure fluid passage 8 .extends longitudinally 'through the plp'e or cylinder 2, pressure water, Isteam or other iuid being introduced at one end of this passage throu h an inlet pipe 9 and esca ing at t e the ot er end thereof by way o an outlet pipe 11. L 1

The .intermediate portion of the pa e .Sconverges forwardly as at 12 'to a point 3 from which it diverges forwardly as at 14 to 6 whirle'd` centriugally--- so that it issues ther outlet pipe-11. Passing through an opening 16 in one side ofthe pipe or cylinder 2 at the rear'of the forwardly converging portion 12 is a branch pipe 1.7 through which passes an induction passage 18.

Thev induction passage Q18 communicates by way of a pipe 19 with a vacuum chamber 21 or the like from which the air or other gas is to be exhausted. This ipe 19 is preferably provided with a han' operated conis also fitted in the induction passage.v This non-return valve may be accommodated as shown in the enlarged upper end 24 of the pipe 19 where the atter'is connected by a union or the like 26 to the branch pipe 17.

rlhe inner end of the branch pipe '17 is threaded as at 27 to a nozzle 28 through which the' induction passage s18 also passes to the mouth 29 of the nozzle. In assem bling the various parts the nozzle is first in-` troduced into the pressure fluid passage 8'4 the branch pipe 17 being then passed through the opening 16 and screwed. into I the nozzle after which the Aopening.l 16' is sealed by welding or other suitable means: The nozzle is located as shown within: the

.converging ortion 12 of the pressure'fluid .passage 8 t e exterior ofthe nozzle 'being tion v31 between which and the converging provided with a forwardly converging vporsurface 12 a narrow annular passage '32 for the pressure tluid'iis formed. Y I

Extendingacross the annular passa e 32 are one ormore outstandingfhelical ri s or bames 33. These ribs are preferably formed on the converging portion of the nozzle as shown and cause' the pressure iuid passing lthrough the annularv passage 32 to be around the mouth of thenozzle in the form of a hollow annular whirling jet orl vortex v into the hollow of .which'the' air or fiuid'is outletpipe 11 to any .desired destination.` By A.the above means a powerful suction is set up inthe induction passage and a high degree of efficiency is obtained-from a com- `10:5 L

paratively simple and inexpensive apparatus Y which calls for a minimum of energy in its operation and owing to the absence of movlng parts is'not. liable to disorder.

L `trol valve 22 whilst a non return valve "23 l led Without departingirom the 'spirit 'and scope of the in`vention for instance the baiiies 33 may be formed on the pipe 8 or any other suitable means may be embodied to perform the same function. What I claim' as my invention and desire to secure by Letters Patent is An ejector comprising a pressure Huid conduit having a part reversely fiaredfrom yan intermediate point forming apassage of Ymaximum constriction at that point, a noz- .zie in the flared part of said conduit on that side adjacent the source of pressure, communicating with the`body of iuid to kbe ejected, said nozzle havin an external shape corresponding substantie 1y tothat of the fiared wall by which it is surrounded and terminating adjacent 'that partvof the passage of maximum constriction, and a vspiral rib between said nozzlean'd'conduit forming a spiral passage for`the pressure fluid4 force, is imparted towhereby centrifu a1 the pressure iiui, effective to holdj Said fluid against the wall'offthe oppositely ared part, producinga vacuous central space in advance of said nozzle. w y

Signed at Melbourne, Victoria, Austrnliu, this 20th day of September,1922. l ADOLPH MARTIN KOBIOLKI'L 

